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Improved low frequency stability of bolometric detectors

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6 Author(s)
Wilbanks, T. ; Dept. of Phys., California Univ., Berkeley, CA, USA ; Devlin, M. ; Lange, A.E. ; Sato, S.
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An AC bridge readout system has been developed that greatly improves the low-frequency stability of bolometric detectors. The readout can be implemented with a simple circuit appropriate for use in space applications. A matched pair of detectors was used in the readout to achieve system noise within a factor of two of the fundamental noise limit of the detectors at frequencies as low as 10 mHz. The low-frequency stability of the readout system allows slower, more sensitive detectors to be used in many applications, and it facilitates observing strategies that are well suited to space-borne observations

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Nuclear Science, IEEE Transactions on  (Volume:37 ,  Issue: 2 )